package main

import "fmt"

func main() {
	m := make(map[string]int)
	m["a"] = 1
	m["b"] = 2
	fmt.Println("map:", m)

	v1 := m["a"]
	fmt.Println("a: ", v1)
	fmt.Println("len:", len(m))

	delete(m, "a")
	fmt.Println("len:", len(m))

	bk, bv := m["a"]
	fmt.Printf("bk:%v,bv:%v\n", bk, bv)

	n := map[string]int{"a": 1, "b": 2}
	fmt.Println("n", n)
}
